CN207010405U - Low pressure quadrupole three-stage dc motor - Google Patents
Low pressure quadrupole three-stage dc motor Download PDFInfo
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- CN207010405U CN207010405U CN201720562391.5U CN201720562391U CN207010405U CN 207010405 U CN207010405 U CN 207010405U CN 201720562391 U CN201720562391 U CN 201720562391U CN 207010405 U CN207010405 U CN 207010405U
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- brush holder
- motor
- section shell
- brush
- carbon brush
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Abstract
A kind of low pressure quadrupole three-stage dc motor, the motor is made up of bearing section, casing section and the brush holder section being coaxially sequentially connected, three stage structure replaces traditional casing to rivet with argon arc welding, convenient adjustment motor overall length, only need to adjust casing length, and brush holder section and bearing section do not have to re-mold.Also simple rivet, convenience are installed between brush holder and metal shell.Bearing section uses side air inlet, not only strengthens the mechanical strength of mounting surface, and add air inflow.The air-flow into motor will not be blocked by the installing plate of client so that the temperature rise of motor is improved.Four-pole motor designs, and in the case where providing with the equal moment of torsion of two stage electric motor, the length of rotor coil will shorten, so that motor overall length also accordingly shortens, reduce customer set up volume.
Description
Technical field
It the utility model is related to a kind of electric tool low pressure quadrupole three-stage dc motor.
Background technology
Nowadays, electric tool dc motor develops to high efficiency, compact direction.The application of four-pole motor, makes
Obtain in the case of same torque, the contraction in length of rotor coil, motor overall length also accordingly shortens.
However, such motor generally use split-type structural design in industry, certainly will add the difficulty that client installs
And cost；On the other hand, conventional monolithic motor, flexibility is lacked.As long as fuselage length is different, it is necessary to turns back on shell
Mould, considerably increase the development cost of new product.
Conventional monolithic motor is riveted by cutter on chassis end roll side or directly, and casing and iron covering are easily deformed；And
The laser welding technology newly used in industry, efficiency are too low.
The temperature rise for reducing electric tool dc motor is always a stubborn problem.If in customer set up cavity
Duct design is bad or motor is installed on the client device, and installing plate blocks the air-flow into motor, and motor is being transported
Temperature rise in turning will be very high.
The content of the invention
The utility model provides a kind of electric tool low pressure quadrupole three-stage dc motor, to realize following purpose：
1）On the premise of design requirement moment of torsion is ensured, shorten motor overall length, reduce the volume of motor body；
2）With reference to the advantages of split type and integral motor；
3）Improve the quality and efficiency of casing welding；
4）Improve motor heat dissipation performance, reduce temperature rise.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of low pressure quadrupole three-stage direct current drive
Machine, including fuselage cover, magnet, rotor, carbon brush component, four blocks of magnet being uniformly distributed along the circumference, rotor are provided with fuselage cover
Two end axles be rotatably supported in the axle center of fuselage cover, commutator and carbon brush component are housed in the rear end of rotor, it is characterised in that
The motor is made up of bearing section, casing section and the brush holder section being coaxially sequentially connected, wherein：
Described bearing section is the bearing section shell with drive end bearing bracket, is evenly equipped with along the periphery of the bearing section shell multiple
Air intake window；
Described casing section includes intermediate casing, and described rotor is provided with the intermediate casing；
Described brush holder section includes brush holder section shell, in the brush holder section shell built with described commutator and carbon brush group
Part；Multiple pig kidney shaped air intake windows being uniformly distributed along the circumference are provided with the rear end face of the brush holder section shell, are set in the outer peripheral face of the shell
There are multiple rear end outlet windows being uniformly distributed along the circumference；
Described intermediate casing both ends cooperate to cover with the abutting end of bearing section shell and brush holder section shell respectively to be merged
Welding, form described fuselage cover, the bearing section shell and brush holder section shell leading portion and back segment respectively as fuselage cover.
Described carbon brush component includes carbon brush bucket, brush holder, torsion spring and carbon brush, and be uniformly distributed along the circumference four footpaths on front side of brush holder
To the carbon brush bucket of setting, in each carbon brush bucket built with a carbon brush, respectively it is used in the outer end of each carbon brush equipped with one to carbon brush
Apply the torsion spring to rotor axis pressure, brush holder is by being located at button point riveting of the brush holder section shell close to rear end outer peripheral face both sides
Button is fixed；Brush holder step position is provided with the rear side of the brush holder.
When described bearing section, casing section and brush holder section structure assembles, on bearing section shell and brush holder section shell both sides inwall
Positioning rice point alignment intermediate casing both ends breach, it is ensured that the angle of carbon brush and magnet is in the range of design；In middle machine
Fabrication hole is left on shell, determined for magnet pasting or when magnetizing magnetic to orientation angle.
The wall thickness 3.0mm of described intermediate casing, undergauge step is provided with the both ends of the intermediate casing, the undergauge step is matched somebody with somebody
It is inserted in the abutting end of the bearing section shell and brush holder section shell with closing so that the external diameter of three sections of shells is identical；Using argon arc welding
It is welded and fixed, eight weld locations are in the positioning rice point both sides of bearing section shell and brush holder section shell.
It is of the present utility model to have the technical effect that：Using quadrupole three stage structure, shorten motor overall length；It is higher with efficiency
Argon arc welding technology allows three sections of fuselages to be connected, and fuselage is not allowed yielding；After forming one, client is facilitated to assemble；Brush holder section uses
The air inlet of top end face, and bearing section uses side air inlet, while mounting surface mechanical strength is improved, increases big air inflow, drop
The temperature rise of low motor.
Brief description of the drawings
Fig. 1 is the overall schematic perspective view of the utility model；
Fig. 2 is explosive view of the present utility model；
Fig. 3 is brush holder section general assembly stereogram；
Fig. 4 is brush holder assembly figure；
Fig. 5 is brush holder section shell figure；
Fig. 6 is casing assembly figure；
Fig. 7 is Ji Ke Transverse profiles；
Fig. 8 is bearing section stereogram；
Fig. 9 is bearing section mounting surface top view；
Figure 10 is the solder joint distribution schematic diagram of the utility model side.
Description of reference numerals：
1 brush holder section；2 casing sections；3 bearing sections；4 rotors；5 carbon brush components；6 button points；7 rear end outlet windows；8 bronze medal carbon sets；9 brushes
Frame；91 brush holder step positions；10 torsion springs；11 carbon brush；12 pig kidney shaped air intake windows；13 brush holder section shells；14 magnet；15 casing techniques
Hole；16 intermediate casings；17 casing breach；18 positioning rice points；19（Bearing section）Side position air intake window；20 pads；Wind in 21 rotors
Leaf, 22 commutators.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of low pressure quadrupole three-stage dc motor of the utility model, including fuselage cover（In
Between casing 16, hold the set merging that cooperates of section shell and brush holder section shell 13 and be welded to form）, magnet 14, rotor 4, carbon brush component
5, the motor is made up of bearing section 1, casing section 2 and the brush holder section 3 being coaxially sequentially connected.
As shown in Figure 3-Figure 5, there are two button points 6 both sides of brush holder section shell 13, for the rivet of carbon brush component 5 is fixed.Institute
The carbon brush component 5 stated includes carbon brush bucket 8, brush holder 9, torsion spring 10 and carbon brush 11, and be uniformly distributed along the circumference four radial directions in the front side of brush holder 9
The carbon brush bucket 8 of setting, in each carbon brush bucket 8 built with a carbon brush 11, respectively it is used for pair equipped with one in the outer end of each carbon brush 11
Carbon brush 11 applies the torsion spring 10 to rotor axis pressure, and brush holder 9 is by being located at the brush holder section shell 13 close to rear end outer peripheral face
The button point rivet 6 of both sides is fixed；Brush holder step position 91 is provided with the rear side of the brush holder 9.Four pieces of carbon brush 11 are circumferentially equal by 90 °
Cloth, and perpendicular to magnet 14.Torsion spring 10 ensures elastic force of the carbon brush 11 in the electrical machinery life later stage by relative constancy so that motor
Performance is more stable.
Especially, the rear side of brush holder 9 devises brush holder step position 91, it is ensured that the metal live part of carbon brush component 5 and brush
Frame section shell 13 retains enough creep age distances between rear end.
There are four pig kidney shaped air intake windows 12 end face of brush holder section shell 13（Referring to Fig. 5）, mutually match with the outlet window 7 of side four
Close.Air intake window 12 and outlet window 7 and interior fan blade 21 and eight side air intake windows 19 of bearing section 1 on rotor 4, form a gas
Air channel is flowed, it is air-cooled to motor internal progress, reduce the temperature rise of motor.The air intake window 19 of brush holder section shell 13 is opened in the side of shell
Face, the mechanical strength without on mounting surface, enhancing mounting surface.
Show that the magnetic field of motor of the present utility model is made up of four pieces 90 ° uniform magnet 14 in Fig. 6 and Fig. 7, magnetic to for
N-S-N-S.The relative angle of carbon brush 11 and magnet 14, by lacking for the positioning rice point 18 on brush holder end housing 13 and intermediate casing 16
Mouthfuls 17 ensure.The wall thickness of intermediate casing 16 is 3.0mm, also will not leakage field without protecting magnetosphere.Fabrication hole is left on intermediate casing 16
15, facilitate magnet 14 paste or determined when magnetizing magnetic to orientation angle（Referring to Fig. 3-Fig. 9）.
As shown in Figure 10, three-stage fuselage of the present utility model is connected by 8 argon arc welding pads 20, pad 20
Weld, complete in four times simultaneously in positioning rice point 18 both sides, the left and right sides in position so that the efficiency of argon arc welding welding compares Laser Welding
Greatly improve, fuselage is not allowed yielding yet.
The utility model three stage structure replaces traditional casing to rivet with argon arc welding, convenient to adjust motor overall length,
Only need to adjust casing length, and brush holder section and bearing section do not have to re-mold.Also simple rivet between brush holder and metal shell,
Convenient installation.
Bearing section uses side air inlet, not only strengthens the mechanical strength of mounting surface, and add air inflow.Will not be by
The installing plate of client blocks the air-flow into motor so that the temperature rise of motor is improved.
Four-pole motor designs, and in the case where providing with the equal moment of torsion of two stage electric motor, the length of rotor coil will
Shorten, so that motor overall length also accordingly shortens, reduce customer set up volume.
In addition, the utility model is not limited only to low pressure quadrupole three-stage dc motor, high-low pressure mixing could be applicable to
The split type dc motor of power（It can refer to utility model patent, Patent No.：ZL2013 2 0574439.6）With high pressure or
Low-voltage direct brushless motor.
Claims (4)
1. a kind of low pressure quadrupole three-stage dc motor, including fuselage cover, magnet, rotor, carbon brush component, in fuselage cover
Four blocks of magnet being uniformly distributed along the circumference inside are provided with, the two end axles of rotor are rotatably supported in the axle center of fuselage cover, in the rear end of rotor
Equipped with commutator and carbon brush component, it is characterised in that the motor is by the bearing section, casing section and the brush holder that are coaxially sequentially connected
Duan Zucheng, wherein：
Described bearing section is the bearing section shell with drive end bearing bracket, and multiple air inlets are evenly equipped with along the periphery of the bearing section shell
Window；
Described casing section includes intermediate casing, and described rotor is provided with the intermediate casing；
Described brush holder section includes brush holder section shell, in the brush holder section shell built with described commutator and carbon brush component；
The rear end face of the brush holder section shell is provided with multiple pig kidney shaped air intake windows being uniformly distributed along the circumference, and is provided with the outer peripheral face of the shell multiple
The rear end outlet window being uniformly distributed along the circumference；
Described intermediate casing both ends cooperate to cover with the abutting end of bearing section shell and brush holder section shell respectively merges welding,
Form described fuselage cover, the bearing section shell and brush holder section shell leading portion and back segment respectively as fuselage cover.
2. low pressure quadrupole three-stage dc motor according to claim 1, it is characterised in that described carbon brush component bag
Carbon brush bucket, brush holder, torsion spring and carbon brush are included, be uniformly distributed along the circumference four carbon brush being radially arranged buckets on front side of brush holder, in each carbon
Brush bucket is respectively used to apply carbon brush the torsion to rotor axis pressure in the outer end of each carbon brush built with a carbon brush equipped with one
Spring, brush holder are fixed by being located at button point rivet of the brush holder section shell close to rear end outer peripheral face both sides；In the rear side of the brush holder
Provided with brush holder step position.
3. low pressure quadrupole three-stage dc motor according to claim 1, it is characterised in that described
When bearing section, casing section and brush holder section structure assemble, the positioning rice point on bearing section shell and brush holder section shell both sides inwall
It is directed at the breach at intermediate casing both ends, it is ensured that the angle of carbon brush and magnet is in the range of design；Work is left on intermediate casing
Skill hole, determined for magnet pasting or when magnetizing magnetic to orientation angle.
4. low pressure quadrupole three-stage dc motor according to claim 1, it is characterised in that described
The wall thickness 3.0mm of intermediate casing, undergauge step is provided with the both ends of the intermediate casing, the undergauge step is ordinatedly inserted in this
In the abutting end of bearing section shell and brush holder section shell so that the external diameter of three sections of shells is identical；It is welded and fixed using argon arc welding, eight
Individual weld locations are in the positioning rice point both sides of bearing section shell and brush holder section shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720562391.5U CN207010405U (en) | 2017-05-19 | 2017-05-19 | Low pressure quadrupole three-stage dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720562391.5U CN207010405U (en) | 2017-05-19 | 2017-05-19 | Low pressure quadrupole three-stage dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207010405U true CN207010405U (en) | 2018-02-13 |
Family
ID=61445149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720562391.5U Active CN207010405U (en) | 2017-05-19 | 2017-05-19 | Low pressure quadrupole three-stage dc motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207010405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104535A (en) * | 2017-05-19 | 2017-08-29 | 钱士祥 | Low pressure quadrupole three-stage dc motor |
-
2017
- 2017-05-19 CN CN201720562391.5U patent/CN207010405U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104535A (en) * | 2017-05-19 | 2017-08-29 | 钱士祥 | Low pressure quadrupole three-stage dc motor |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220826 Address after: No. 1068, Kaifa West Road, Zhouxiang Town, Cixi City, Ningbo City, Zhejiang Province, 315300 Patentee after: CIXI CITY LESHI ELECTRIC MACHINE ELECTRIC APPLIANCE Co.,Ltd. Address before: 315324 No. 1068, Kaifa West Road, Zhouxiang Town, Cixi City, Ningbo City, Zhejiang Province Patentee before: Qian Shixiang |